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Sundial with solar hours

The lines of solar hours (or true hours) are the lines of the olds sundials. If you want draw this kind of sundial, you have just to check the Solar sundial tick box and enter, if it is not done, the longitude and the time zone.

The sundial will indicate midday when the sun will be at the top, at the exact moment of the half-day. To get the legal hour, it is necessary to add a further correction supplied by Calcad.

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